Wondering why the crowd is so low when:
1. Vienna rounds presumably resuming next week ( Iran To Resume JCPOA Talks Next Week, Says Lawmaker https://www.eurasiareview.com/18102021-iran-to-resume-jcpoa-talks-next-week-says-lawmaker/ ) and previous Vienna rounds accomplished much of the ground work with a few "political" issues remaining.
2. post-election delays in Iran were factored in, and not a result of wide disagreements, IAEA disputes apparently on the path to being resolved: https://www.al-monitor.com/originals/2021/09/iran-iaea-spar-over-access-karaj-nuclear-site
3. EU High Representative Borrell: "everybody is determined to bring back the JCPOA...so we are working hard to go back to Vienna." https://twitter.com/laurnorman/status/1450122885956243460
Clearly once negotiations resume end of October it will be a matter of a few weeks to determine if they fail completely or if the crowd here was moved more by impatience these past few months.
A more speculative picture taking into account a wider regional view, including Qatar-EU relations and the upcoming world cup, makes it difficult to imagine tensions in the gulf ruining that event when a much smaller event as the winter olympics is credited with preventing a scaling up of tensions with China....